66 lines
1.1 KiB
Go
66 lines
1.1 KiB
Go
//go:build windows
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package aghnet
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import (
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"bufio"
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"net"
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"net/netip"
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"strings"
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"sync"
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)
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func newARPDB() (arp *cmdARPDB) {
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return &cmdARPDB{
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parse: parseArpA,
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ns: &neighs{
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mu: &sync.RWMutex{},
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ns: make([]Neighbor, 0),
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},
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cmd: "arp",
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args: []string{"/a"},
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}
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}
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// parseArpA parses the output of the "arp /a" command on Windows. The expected
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// input format (the first line is empty):
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//
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// Interface: 192.168.56.16 --- 0x7
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// Internet Address Physical Address Type
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// 192.168.56.1 0a-00-27-00-00-00 dynamic
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// 192.168.56.255 ff-ff-ff-ff-ff-ff static
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func parseArpA(sc *bufio.Scanner, lenHint int) (ns []Neighbor) {
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ns = make([]Neighbor, 0, lenHint)
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for sc.Scan() {
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ln := sc.Text()
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if ln == "" {
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continue
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}
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fields := strings.Fields(ln)
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if len(fields) != 3 {
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continue
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}
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n := Neighbor{}
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ip, err := netip.ParseAddr(fields[0])
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if err != nil {
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continue
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} else {
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n.IP = ip
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}
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mac, err := net.ParseMAC(fields[1])
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if err != nil {
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continue
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} else {
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n.MAC = mac
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}
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ns = append(ns, n)
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}
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return ns
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}
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